Sidelink configured grant skipping

Abstract

Methods, systems, and devices for sidelink configured grant skipping are described. In some examples, a first user equipment (UE) may receive, from a base station, an indication of periodic data resources for a plurality of sidelink data transmissions and an indication of negative scheduling request resources for the first UE to report a skipped sidelink data transmission associated with the plurality of sidelink data transmissions. In some examples, the first UE may transmit, to a second UE, an indication of the skipped sidelink data transmission and may transmit, to a base station, a negative scheduling request using the negative scheduling request resources, where the negative scheduling request may report the skipped data transmissions associated with the plurality of sidelink data transmissions.

What is claimed is: 
     
       1. An apparatus for wireless communication at a first user equipment (UE), comprising:
 a processor; 
 memory coupled with the processor; and 
 instructions stored in the memory and executable by the processor to cause the apparatus to:
 receive, from a base station, an indication of periodic data resources for a plurality of sidelink data transmissions and an indication of negative scheduling request resources for the UE to report a skipped sidelink data transmission associated with the plurality of sidelink data transmissions; 
 transmit, to a second UE, an indication of the skipped sidelink data transmission; and 
 transmit, to the base station, a negative scheduling request using the negative scheduling request resources, wherein the negative scheduling request reports the skipped data transmission associated with the plurality of sidelink data transmissions. 
 
 
     
     
       2. The apparatus of  claim 1 , wherein the instructions to receive the indication of the negative scheduling request resources are executable by the processor to cause the apparatus to:
 receive, from the base station, an indication of a number of symbols between the negative scheduling request resource and the skipped sidelink data transmission of the plurality of sidelink data transmissions. 
 
     
     
       3. The apparatus of  claim 1 , wherein the instructions to receive the indication of the negative scheduling request resources are executable by the processor to cause the apparatus to:
 receive, from the base station, an indication of a periodicity associated with the negative scheduling request resources. 
 
     
     
       4. The apparatus of  claim 3 , wherein the periodicity associated with the negative scheduling request resources is an integer multiple of a periodicity associated with the sidelink data transmissions. 
     
     
       5. The apparatus of  claim 1 , wherein:
 the negative scheduling request specifies a plurality of skipped data transmissions, and 
 a numerical quantity of the plurality of skipped data transmissions is based at least in part on a periodicity associated with the sidelink data transmissions. 
 
     
     
       6. The apparatus of  claim 1 , wherein the instructions to receive the indication of the negative scheduling request resources are executable by the processor to cause the apparatus to:
 receive, from the base station, an indication of a physical uplink control channel (PUCCH) resource for transmitting an acknowledgement or a negative acknowledgement of one or more sidelink data transmissions of the plurality of sidelink data transmissions. 
 
     
     
       7. The apparatus of  claim 6 , wherein the instructions to transmit the negative scheduling request are executable by the processor to cause the apparatus to:
 multiplex the negative scheduling request with the acknowledgement or the negative acknowledgement of the one or more sidelink data transmissions in the PUCCH resource. 
 
     
     
       8. The apparatus of  claim 7 , wherein the instructions to multiplex the negative scheduling request with the acknowledgment or the negative acknowledgment of the one or more sidelink data transmissions are executable by the processor to cause the apparatus to:
 transmit a PUCCH payload in the PUCCH resource, the PUCCH payload including a first number of bits for the acknowledgement or the negative acknowledgement and a second number of bits for a sidelink data transmission skipping indication. 
 
     
     
       9. The apparatus of  claim 1 , wherein the indication of the skipped sidelink data transmission further indicates a skipping of one or more additional sidelink data transmissions subsequent to the skipped sidelink data transmission. 
     
     
       10. The apparatus of  claim 1 , wherein the indication of the skipped sidelink data transmission indicates a skipping pattern for a group of sidelink data transmissions of the plurality of sidelink data transmissions. 
     
     
       11. The apparatus of  claim 1 , wherein the instructions to are executable by the processor to cause the apparatus to:
 sidelink control information, a sidelink medium access control (MAC) control element (CE) message, radio resource control (RRC) signaling, or a combination thereof. 
 
     
     
       12. The apparatus of  claim 11 , wherein the indication of the skipped sidelink data transmission comprises stage one sidelink control information, stage two sidelink control information, or both. 
     
     
       13. An apparatus for wireless communication at a base station, comprising:
 a processor; 
 memory coupled with the processor; and 
 instructions stored in the memory and executable by the processor to cause the apparatus to:
 transmit, to a user equipment (UE), an indication of periodic data resources for a plurality of sidelink data transmissions and an indication of negative scheduling request resources for the UE to report a skipped sidelink data transmission associated with the sidelink data transmissions; and 
 receive, from the UE, a negative scheduling request using the negative scheduling resources, wherein the negative scheduling request reports the skipped data transmission associated with the plurality of sidelink data transmissions. 
 
 
     
     
       14. The apparatus of  claim 13 , wherein the instructions to transmit the indication of the negative scheduling request resources are executable by the processor to cause the apparatus to:
 transmit, to the UE, an indication of a number of symbols between a negative scheduling request resource and a corresponding sidelink data transmission. 
 
     
     
       15. The apparatus of  claim 14 , wherein the number of symbols between the negative scheduling request resource and the corresponding sidelink data transmission corresponds to a decoding time at the base station associated with processing the negative scheduling request. 
     
     
       16. The apparatus of  claim 13 , wherein the instructions to transmit the indication of the negative scheduling request resources are executable by the processor to cause the apparatus to:
 transmit, to the UE, an indication of a periodicity associated with negative scheduling request resources. 
 
     
     
       17. The apparatus of  claim 16 , wherein the periodicity associated with negative scheduling resources request is an integer multiple of a periodicity associated with sidelink data transmissions. 
     
     
       18. The apparatus of  claim 13 , wherein:
 the negative scheduling request specifies a plurality of skipped data transmissions, and 
 a numerical quantity of the plurality of skipped data transmissions is based at least in part on a periodicity associated with the sidelink data transmissions. 
 
     
     
       19. The apparatus of  claim 13 , wherein the instructions to transmit the indication of the negative scheduling request resources are executable by the processor to cause the apparatus to:
 transmit, to the UE, an indication of a physical uplink control channel (PUCCH) resource for transmitting an acknowledgement or a negative acknowledgement of one or more sidelink data transmissions of the plurality of sidelink data transmissions. 
 
     
     
       20. The apparatus of  claim 19 , wherein the instructions to receive the negative scheduling request are executable by the processor to cause the apparatus to:
 multiplex the negative scheduling request with the acknowledgement or the negative acknowledgement of the one or more sidelink data transmissions in the PUCCH resource. 
 
     
     
       21. The apparatus of  claim 20 , wherein the instructions to multiplex the negative scheduling request with the acknowledgement or the negative acknowledgement of the one or more sidelink data transmissions are executable by the processor to cause the apparatus to:
 receive a PUCCH payload in the PUCCH resource, the PUCCH payload including a first number of bits for the acknowledgement or the negative acknowledgement and a second number of bits for a sidelink data transmission skipping indication. 
 
     
     
       22. The apparatus of  claim 13 , wherein the instructions are further executable by the processor to cause the apparatus to:
 decode the negative scheduling request; and 
 schedule other transmissions during instances corresponding to skipped data transmissions. 
 
     
     
       23. A method for wireless communication at a first user equipment (UE), comprising:
 receiving, from a base station, an indication of periodic data resources for a plurality of sidelink data transmissions and an indication of negative scheduling request resources for the UE to report a skipped sidelink data transmission associated with the plurality of sidelink data transmissions; 
 transmitting, to a second UE, an indication of the skipped sidelink data transmission; and 
 transmitting, to the base station, a negative scheduling request using the negative scheduling request resources, wherein the negative scheduling request reports the skipped data transmission associated with the plurality of sidelink data transmissions. 
 
     
     
       24. The method of  claim 23 , wherein receiving the indication of the negative scheduling request resources comprises:
 receiving, from the base station, an indication of a number of symbols between the negative scheduling request resource and the skipped sidelink data transmission of the plurality of sidelink data transmissions. 
 
     
     
       25. The method of  claim 23 , wherein receiving the indication of the negative scheduling request resources comprises:
 receiving, from the base station, an indication of a periodicity associated with the negative scheduling request resources. 
 
     
     
       26. The method of  claim 25 , wherein the periodicity associated with the negative scheduling request resources is an integer multiple of a periodicity associated with the sidelink data transmissions. 
     
     
       27. A method for wireless communication at a base station, comprising:
 transmitting, to a user equipment (UE), an indication of periodic data resources for a plurality of sidelink data transmissions and an indication of negative scheduling request resources for the UE to report a skipped sidelink data transmission associated with the sidelink data transmissions; and 
 receiving, from the UE, a negative scheduling request using the negative scheduling resources, wherein the negative scheduling request reports the skipped data transmission associated with the plurality of sidelink data transmissions. 
 
     
     
       28. The method of  claim 27 , wherein transmitting the indication of the negative scheduling request resources comprises:
 transmitting, to the UE, an indication of a number of symbols between a negative scheduling request resource and a corresponding sidelink data transmission. 
 
     
     
       29. The method of  claim 28 , wherein the number of symbols between the negative scheduling request resource and the corresponding sidelink data transmission corresponds to a decoding time at the base station associated with processing the negative scheduling request. 
     
     
       30. The method of  claim 27 , wherein transmitting the indication of the negative scheduling request resources comprises:
 transmitting, to the UE, an indication of a periodicity associated with negative scheduling request resources.